I doubt a basic crewmember could freely walk around. Surely, their duties would have them remain in specific areas (like an engineer affected to the engines would rarely go anywhere besides engines, cantina and quarters).

Yeah, not too much action is ok, for players that dont like it, but doing a game about crew member... it would be too boring. By the way I just have another game idea -> first of its kind - noone did something like that before, and i doubt ever will. Imagine this -> Huge spacecruiser, 300 crew on board, middle of the war, middle of the battle, fight is going on, everyone are running, everything exploding, power shortages, and You inside of this mess... the janitor who needs to clean all toilets on board...